Convert ELIXIR_MODULEs in Small IDEs to Projects with Elixir Facets

[KronicDeth]

Fixes #1378

Test Plan

1. Remove project and module information: rm -rf **/*.iml **/.idea projectFilesBackup*
2. Install IntelliJ Elixir 10.4.0 in Small IDE
3. Open project root directory in Small IDE
4. [VERIFY] *.iml files with ELIXIR_MODULE exist in root and apps/* directories
5. Close the project
6. Install IntelliJ Elixir 10.4.1-pre* in Small IDE
7. Open project root directory in Small IDE
8. [VERIFY] Conversion dialog asks to Convert project
9. Click Convert
10. [VERIFY] *.iml files with ELIXIR_MODULE are gone.
11. [VERIFY] root and apps/* directories show up as projects (bolded)
12. Expand External Libraries
13. [VERIFY] all deps show up as external libraries.

Test Report

• Test Plan run with Rubymine 2018.3.5: ✅
• Test Plan run with WebStorm 2019.1: ❌
  WebStorm does not support attaching projects. It cannot support umbrella projects, but the converting will clean up the incorrect ELIXIR_MODULEs still.
• Test Plan run with PHPStorm 2019.1: ❌
  Could not reliably get eex_test to attach while it worked for eex_test_umbrella at the root and eex_test_web as a sibling.

Summary

Attaching multiple project is unreliable outside of Rubymine, so only allow it in Rubymine and raise a notification in other small IDEs telling users of projects with multiple OTP apps to use IntelliJ (preferred) or Rubymine.

Changelog

Enhancements

• Update local build to IDEA 2019.1

Bug Fixes

• In RubyMine, attach OTP applications as separate projects with Elixir facets instead of directly creating ELIXIR_MODULE modules in DirectoryConfigurator. This matches the manual steps of opening the OTP apps as separate directories after opening the root of the project.
  • Mark directories when adding facet
  • Sync libraries when adding facet or attaching to root project. Ensures External Libraries show up for all OTP applications.
• Convert Small IDE projects with ELIXIR_MODULEs:
  1. Remove ELIXIR_MODULE *.iml files
  2. Remove ELIXIR_MODULE entries root project's modules.xml file.
  3. Lack of modules in project in doOpenProject will trigger DirectoryProjectConfigurators to be run, which will setup the project and run DirectoryConfigurator to attach the apps OTP apps and Elixir facets.
     • Only support automatic attaching multiple OTP apps as separate projects in Rubymine. In IntelliJ normal support for multiple Modules in one Project still works.